Thanks for the reply, things make sense now ;-)
Cheers,
Sebastien
Le 13/05/2022 à 23:38, Dan Bungert a écrit :
> On Fri, May 13, 2022 at 10:39:54PM +0200, Sebastien Bacher wrote:
>> Hey Brian,
>>
>> I noticed that upload and I'm curious about the motivation. It's really
>> early in the cycle and we will get bluez updates and time for archive
>> rebuilds later on so I guess the aim is not to get packages built with a new
>> LTO by release time. Did we have a buggy LTO version in the archive and are
>> we rebuilding things with a fixed version? Which packages do need a rebuild
>> and do we need to organize the rebuilds with the owning teams?
>>
>> Cheers,
>> Sebastien Bacher
>>
>> Le 13/05/2022 à 21:56, Brian Murray a écrit :
>>> bluez (5.64-0ubuntu2) kinetic; urgency=medium
>>>
>>> * No change rebuild to pickup a new version of LTO.
>>>
>>> Date: Fri, 13 May 2022 12:36:19 -0700
>>> Changed-By: Brian Murray <brian@ubuntu.com>
>>> Maintainer: Ubuntu Bluetooth team <ubuntu-bluetooth@lists.ubuntu.com>
>>> https://launchpad.net/ubuntu/+source/bluez/5.64-0ubuntu2
> Hi Seb,
>
> Brian uploaded this at my behest.
>
> If you were to build with LTO against
> /usr/lib/x86_64-linux-gnu/bluetooth/plugins/sixaxis.a, which can be found in
> libbluetooth-dev, then you would see an error like:
>
> fatal error: bytecode stream in file
> '/tmp/tmphqmwfhcw/archive-1/sixaxis_la-sixaxis.o' generated with LTO
> version 11.2 instead of the expected 11.3
>
> I did some work last week detecting cases like this and requesting rebuilds.
> My view on this was that if we built these proactively, we might prevent some
> FTBFS. So not so much a buggy LTO as a mismatched one.
>
> Real-world example of this sort of problem, when attempting to build gyoto
> against liblorene-dev:
> https://autopkgtest.ubuntu.com/results/autopkgtest-kinetic/kinetic/amd64/g/gyoto/20220503_215822_37721@/log.gz
> lto1: fatal error: bytecode stream in file
> '/usr/lib/x86_64-linux-gnu/lorene/Lib/liblorene_g.a' generated with LTO
> version 11.2 instead of the expected 11.3
>
> -Dan
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